<!DOCTYPE html>
<html lang="en" dir="ltr" class="client-nojs">
<head>
<title>C attribute: deprecated (since C23) - cppreference.com</title>
<meta charset="UTF-8">
<meta name="generator" content="MediaWiki 1.21.2">
<link rel="shortcut icon" href="../../../../common/favicon.ico">
<link rel="stylesheet" href="../../../../common/ext.css">
<meta name="ResourceLoaderDynamicStyles" content="">
<link rel="stylesheet" href="../../../../common/site_modules.css">
<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}#toc{display:none}.editsection{display:none}
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-css:7:472787eddcf4605d11de8c7ef047234f */</style>

<script src="../../../../common/startup_scripts.js"></script>
<script>if(window.mw){
mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"c/language/attributes/deprecated","wgTitle":"c/language/attributes/deprecated","wgCurRevisionId":124545,"wgArticleId":19919,"wgIsArticle":true,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":[],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"c/language/attributes/deprecated","wgRestrictionEdit":[],"wgRestrictionMove":[]});
}</script><script>if(window.mw){
mw.loader.implement("user.options",function(){mw.user.options.set({"ccmeonemails":0,"cols":80,"date":"default","diffonly":0,"disablemail":0,"disablesuggest":0,"editfont":"default","editondblclick":0,"editsection":0,"editsectiononrightclick":0,"enotifminoredits":0,"enotifrevealaddr":0,"enotifusertalkpages":1,"enotifwatchlistpages":0,"extendwatchlist":0,"externaldiff":0,"externaleditor":0,"fancysig":0,"forceeditsummary":0,"gender":"unknown","hideminor":0,"hidepatrolled":0,"imagesize":2,"justify":0,"math":1,"minordefault":0,"newpageshidepatrolled":0,"nocache":0,"noconvertlink":0,"norollbackdiff":0,"numberheadings":0,"previewonfirst":0,"previewontop":1,"quickbar":5,"rcdays":7,"rclimit":50,"rememberpassword":0,"rows":25,"searchlimit":20,"showhiddencats":0,"showjumplinks":1,"shownumberswatching":1,"showtoc":0,"showtoolbar":1,"skin":"cppreference2","stubthreshold":0,"thumbsize":2,"underline":2,"uselivepreview":0,"usenewrc":0,"watchcreations":0,"watchdefault":0,"watchdeletion":0,
"watchlistdays":3,"watchlisthideanons":0,"watchlisthidebots":0,"watchlisthideliu":0,"watchlisthideminor":0,"watchlisthideown":0,"watchlisthidepatrolled":0,"watchmoves":0,"wllimit":250,"variant":"en","language":"en","searchNs0":true,"searchNs1":false,"searchNs2":false,"searchNs3":false,"searchNs4":false,"searchNs5":false,"searchNs6":false,"searchNs7":false,"searchNs8":false,"searchNs9":false,"searchNs10":false,"searchNs11":false,"searchNs12":false,"searchNs13":false,"searchNs14":false,"searchNs15":false,"gadget-ColiruCompiler":1,"gadget-MathJax":1});;},{},{});mw.loader.implement("user.tokens",function(){mw.user.tokens.set({"editToken":"+\\","patrolToken":false,"watchToken":false});;},{},{});
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-js:7:9f05c6caceb9bb1a482b6cebd4c5a330 */
}</script>
<script>if(window.mw){
mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","mediawiki.legacy.ajax"]);
}</script>
<style type="text/css">/*<![CDATA[*/
.source-c {line-height: normal;}
.source-c li, .source-c pre {
	line-height: normal; border: 0px none white;
}
/**
 * GeSHi Dynamically Generated Stylesheet
 * --------------------------------------
 * Dynamically generated stylesheet for c
 * CSS class: source-c, CSS id: 
 * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
 * (http://qbnz.com/highlighter/ and http://geshi.org/)
 * --------------------------------------
 */
.c.source-c .de1, .c.source-c .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.c.source-c  {font-family:monospace;}
.c.source-c .imp {font-weight: bold; color: red;}
.c.source-c li, .c.source-c .li1 {font-weight: normal; vertical-align:top;}
.c.source-c .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.c.source-c .li2 {font-weight: bold; vertical-align:top;}
.c.source-c .kw1 {color: #0000dd;}
.c.source-c .kw2 {color: #0000ff;}
.c.source-c .kw3 {color: #0000dd;}
.c.source-c .kw4 {color: #0000ff;}
.c.source-c .co1 {color: #909090;}
.c.source-c .co2 {color: #339900;}
.c.source-c .coMULTI {color: #ff0000; font-style: italic;}
.c.source-c .es0 {color: #008000; font-weight: bold;}
.c.source-c .es1 {color: #008000; font-weight: bold;}
.c.source-c .es2 {color: #008000; font-weight: bold;}
.c.source-c .es3 {color: #008000; font-weight: bold;}
.c.source-c .es4 {color: #008000; font-weight: bold;}
.c.source-c .es5 {color: #008000; font-weight: bold;}
.c.source-c .br0 {color: #008000;}
.c.source-c .sy0 {color: #008000;}
.c.source-c .sy1 {color: #000080;}
.c.source-c .sy2 {color: #000040;}
.c.source-c .sy3 {color: #000040;}
.c.source-c .sy4 {color: #008080;}
.c.source-c .st0 {color: #008000;}
.c.source-c .nu0 {color: #000080;}
.c.source-c .nu6 {color:#000080;}
.c.source-c .nu8 {color:#000080;}
.c.source-c .nu12 {color:#000080;}
.c.source-c .nu16 {color:#000080;}
.c.source-c .nu17 {color:#000080;}
.c.source-c .nu18 {color:#000080;}
.c.source-c .nu19 {color:#000080;}
.c.source-c .ln-xtra, .c.source-c li.ln-xtra, .c.source-c div.ln-xtra {background-color: #ffc;}
.c.source-c span.xtra { display:block; }

/*]]>*/
</style><style type="text/css">/*<![CDATA[*/
.source-text {line-height: normal;}
.source-text li, .source-text pre {
	line-height: normal; border: 0px none white;
}
/**
 * GeSHi Dynamically Generated Stylesheet
 * --------------------------------------
 * Dynamically generated stylesheet for text
 * CSS class: source-text, CSS id: 
 * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
 * (http://qbnz.com/highlighter/ and http://geshi.org/)
 * --------------------------------------
 */
.text.source-text .de1, .text.source-text .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.text.source-text  {font-family:monospace;}
.text.source-text .imp {font-weight: bold; color: red;}
.text.source-text li, .text.source-text .li1 {font-weight: normal; vertical-align:top;}
.text.source-text .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.text.source-text .li2 {font-weight: bold; vertical-align:top;}
.text.source-text .ln-xtra, .text.source-text li.ln-xtra, .text.source-text div.ln-xtra {background-color: #ffc;}
.text.source-text span.xtra { display:block; }

/*]]>*/
</style><!--[if lt IE 7]><style type="text/css">body{behavior:url("/mwiki/skins/cppreference2/csshover.min.htc")}</style><![endif]--></head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_language_attributes_deprecated skin-cppreference2 action-view cpp-navbar">
        <!-- header -->
        <!-- /header -->
        <!-- content -->
<div id="cpp-content-base">
            <div id="content">
                <a id="top"></a>
                <div id="mw-js-message" style="display:none;"></div>
                                <!-- firstHeading -->
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">C attribute:</span> deprecated <span class="t-mark-rev t-since-c23">(since C23)</span></h1>
                <!-- /firstHeading -->
                <!-- bodyContent -->
                <div id="bodyContent">
                                        <!-- tagline -->
                    <div id="siteSub">From cppreference.com</div>
                    <!-- /tagline -->
                                        <!-- subtitle -->
                    <div id="contentSub"><span class="subpages">&lt; <a href="../../../c.html" title="c">c</a>‎ | <a href="../../language.html" title="c/language">language</a>‎ | <a href="../attributes.html" title="c/language/attributes">attributes</a></span></div>
                    <!-- /subtitle -->
                                                            <!-- bodycontent -->
                    <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="t-navbar" style=""><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../../c.html" title="c"> C</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="line-height:1.1em;">
<tr class="t-nv"><td colspan="5"> <a href="../../language.html" title="c/language"> Language</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../header.html" title="c/header"> Headers</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../types.html" title="c/types"> Type support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../program.html" title="c/program"> Program utilities</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../variadic.html" title="c/variadic"> Variadic function support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../error.html" title="c/error"> Error handling</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../memory.html" title="c/memory"> Dynamic memory management</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../string.html" title="c/string"> Strings library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../algorithm.html" title="c/algorithm"> Algorithms</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../numeric.html" title="c/numeric"> Numerics</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../chrono.html" title="c/chrono"> Date and time utilities</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../io.html" title="c/io"> Input/output support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../locale.html" title="c/locale"> Localization support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../thread.html" title="c/thread"> Concurrency support</a> <span class="t-mark-rev t-since-c11">(C11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../experimental.html" title="c/experimental"> Technical Specifications</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../index.html" title="c/symbol index"> Symbol index</a> </td></tr>
</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../language.html" title="c/language"> C language</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="../basic_concepts.html" title="c/language/basic concepts">Basic concepts</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../keyword.html" title="c/keyword"> Keywords</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../preprocessor.html" title="c/preprocessor"> Preprocessor</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../statements.html" title="c/language/statements"> Statements</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../expressions.html" title="c/language/expressions"> Expressions</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../initialization.html" title="c/language/initialization"> Initialization</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../declarations.html" title="c/language/declarations"> Declarations</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../functions.html" title="c/language/functions"> Functions</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Miscellaneous</td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../history.html" title="c/language/history"> History of C</a></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../experimental.html" title="c/experimental">Technical Specifications</a> </td></tr>
</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../declarations.html" title="c/language/declarations"> Declarations</a><div class="t-navbar-menu"><div><div style="display:inline-block">
<div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="../pointer.html" title="c/language/pointer"> pointer</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../array.html" title="c/language/array"> array</a> </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../enum.html" title="c/language/enum"><span class="t-lines"><span>enum</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../struct.html" title="c/language/struct"><span class="t-lines"><span>struct</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../union.html" title="c/language/union"><span class="t-lines"><span>union</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../bit_field.html" title="c/language/bit field"> bit field</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../atomic.html" title="c/language/atomic"> atomic types</a> <span class="t-mark-rev t-since-c11">(C11)</span></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../const.html" title="c/language/const"><span class="t-lines"><span>const</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../volatile.html" title="c/language/volatile"><span class="t-lines"><span>volatile</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../restrict.html" title="c/language/restrict"><span class="t-lines"><span>restrict</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../_Alignas.html" title="c/language/ Alignas"><span class="t-lines"><span>_Alignas</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../storage_duration.html" title="c/language/storage duration"> storage duration and linkage</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../extern.html" title="c/language/extern"> external and tentative definitions</a> </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../typedef.html" title="c/language/typedef"><span class="t-lines"><span>typedef</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../static_assert.html" title="c/language/ Static assert"><span class="t-lines"><span>_Static_assert</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../attributes.html" title="c/language/attributes"> attributes</a> <span class="t-mark-rev t-since-c23">(C23)</span></td></tr>
</table></div>
</div><div></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../attributes.html" title="c/language/attributes"> Attributes</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>deprecated</span></span></strong></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c23">(C23)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="fallthrough.html" title="c/language/attributes/fallthrough"><span class="t-lines"><span>fallthrough</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c23">(C23)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="nodiscard.html" title="c/language/attributes/nodiscard"><span class="t-lines"><span>nodiscard</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c23">(C23)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="maybe_unused.html" title="c/language/attributes/maybe unused"><span class="t-lines"><span>maybe_unused</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c23">(C23)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="noreturn.html" title="c/language/attributes/noreturn"><span class="t-lines"><span>noreturn</span><span>_Noreturn</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c23">(C23)</span></span><span><span class="t-mark-rev t-since-c23">(C23)</span><span class="t-mark">(deprecated)</span></span></span></div></div></td></tr>
</table></div><div></div></div></div></div><div class="t-navbar-sep"> </div></div>
<p>Indicates that the name or entity declared with this attribute is <a href="https://en.wikipedia.org/wiki/Deprecation" class="extiw" title="enwiki:Deprecation">deprecated</a>, that is, the use is allowed, but discouraged for some reason.
</p>
<h3><span class="mw-headline" id="Syntax">Syntax</span></h3>
<table class="t-sdsc-begin">

<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr>
<tr class="t-sdsc">
<td> <code><b>[[</b></code> <code><b>deprecated</b></code> <code><b>]]</b></code><br><code><b>[[</b></code> <code><b>__deprecated__</b></code> <code><b>]]</b></code>
</td>
<td> (1)
</td>
<td class="t-sdsc-nopad">
</td></tr>



<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr>
<tr class="t-sdsc">
<td> <code><b>[[</b></code> <code><b>deprecated</b></code> <code><b>(</b></code> <span class="t-spar">string-literal</span> <code><b>)</b></code> <code><b>]]</b></code><br><code><b>[[</b></code> <code><b>__deprecated__</b></code> <code><b>(</b></code> <span class="t-spar">string-literal</span> <code><b>)</b></code> <code><b>]]</b></code>
</td>
<td> (2)
</td>
<td class="t-sdsc-nopad">
</td></tr>



<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr></table>
<table class="t-par-begin">


<tr class="t-par">
<td>  <span class="t-spar">string-literal</span>
</td>
<td> -
</td>
<td>  text that could be used to explain the rationale for deprecation and/or to suggest a replacing entity
</td></tr></table>
<h3><span class="mw-headline" id="Explanation">Explanation</span></h3>
<p>Indicates that the use of the name or entity declared with this attribute is allowed, but discouraged for some reason. Compilers typically issue warnings on such uses. The <span class="t-spar">string-literal</span>, if specified, is usually included in the warnings.
</p><p>This attribute is allowed in declarations of the following names or entities:
</p>
<ul><li> <a href="../struct.html" title="c/language/struct">struct</a>/<a href="../union.html" title="c/language/union">union</a>: <span class="t-c"><span class="mw-geshi c source-c"><span class="kw1">struct</span> <span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> S<span class="sy4">;</span></span></span>,
</li><li> <a href="../typedef.html" title="c/language/typedef">typedef-name</a>: <span class="t-c"><span class="mw-geshi c source-c"><span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> <span class="kw1">typedef</span> S<span class="sy2">*</span> PS<span class="sy4">;</span></span></span>,
</li><li> objects: <span class="t-c"><span class="mw-geshi c source-c"><span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> <span class="kw4">int</span> x<span class="sy4">;</span></span></span>,
</li><li> struct/union member: <span class="t-c"><span class="mw-geshi c source-c"><span class="kw1">union</span> U <span class="br0">{</span> <span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> <span class="kw4">int</span> n<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></span></span>,
</li><li> <a href="../function_definition.html" title="c/language/function definition">function</a>: <span class="t-c"><span class="mw-geshi c source-c"><span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> <span class="kw4">void</span> f<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span><span class="sy4">;</span></span></span>,
</li><li> <a href="../enum.html" title="c/language/enum">enumeration</a>: <span class="t-c"><span class="mw-geshi c source-c"><span class="kw2">enum</span> <span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> E <span class="br0">{</span><span class="br0">}</span><span class="sy4">;</span></span></span>,
</li><li> enumerator: <span class="t-c"><span class="mw-geshi c source-c"><span class="kw2">enum</span> <span class="br0">{</span> A <span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span>, B <span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span> <span class="sy1">=</span> <span class="nu0">42</span> <span class="br0">}</span><span class="sy4">;</span></span></span>.
</li></ul>
<p>A name declared non-deprecated may be redeclared deprecated. A name declared deprecated cannot be un-deprecated by redeclaring it without this attribute.
</p>
<h3><span class="mw-headline" id="Example">Example</span></h3>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
 
<span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">]</span><span class="br0">]</span>
<span class="kw4">void</span> TriassicPeriod<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../../io/puts.html"><span class="kw836">puts</span></a><span class="br0">(</span><span class="st0">"Triassic Period: [251.9 - 208.5] million years ago."</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
 
<span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">(</span><span class="st0">"Use NeogenePeriod() instead."</span><span class="br0">)</span><span class="br0">]</span><span class="br0">]</span>
<span class="kw4">void</span> JurassicPeriod<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../../io/puts.html"><span class="kw836">puts</span></a><span class="br0">(</span><span class="st0">"Jurassic Period: [201.3 - 152.1] million years ago."</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
 
<span class="br0">[</span><span class="br0">[</span>deprecated<span class="br0">(</span><span class="st0">"Use calcSomethingDifferently(int)."</span><span class="br0">)</span><span class="br0">]</span><span class="br0">]</span>    
<span class="kw4">int</span> calcSomething<span class="br0">(</span><span class="kw4">int</span> x<span class="br0">)</span>
<span class="br0">{</span>
    <span class="kw1">return</span> x <span class="sy2">*</span> <span class="nu0">2</span><span class="sy4">;</span>
<span class="br0">}</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    TriassicPeriod<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
    JurassicPeriod<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Possible output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">Triassic Period: [251.9 - 208.5] million years ago.
Jurassic Period: [201.3 - 152.1] million years ago.
 
prog.c:23:5: warning: 'TriassicPeriod' is deprecated [-Wdeprecated-declarations]
    TriassicPeriod();
    ^
prog.c:3:3: note: 'TriassicPeriod' has been explicitly marked deprecated here
[[deprecated]]
  ^
prog.c:24:5: warning: 'JurassicPeriod' is deprecated: Use NeogenePeriod() instead. [-Wdeprecated-declarations]
    JurassicPeriod();
    ^
prog.c:9:3: note: 'JurassicPeriod' has been explicitly marked deprecated here
[[deprecated("Use NeogenePeriod() instead.")]]
  ^
2 warnings generated.</pre></div></div> 
</div>
<h3><span class="mw-headline" id="See_also">See also</span></h3>
<table class="t-dsc-begin">

</table>

<!-- 
NewPP limit report
Preprocessor visited node count: 2071/1000000
Preprocessor generated node count: 5099/1000000
Post‐expand include size: 62128/2097152 bytes
Template argument size: 13925/2097152 bytes
Highest expansion depth: 16/40
Expensive parser function count: 0/100
-->

<!-- Saved in parser cache with key mwiki1-mwiki_en_:pcache:idhash:19919-0!*!0!!en!*!* and timestamp 20220618073553 -->
</div>                    <!-- /bodycontent -->
                                        <!-- printfooter -->
                    <div class="printfooter">
                    Retrieved from "<a href="https://en.cppreference.com/mwiki/index.php?title=c/language/attributes/deprecated&amp;oldid=124545">https://en.cppreference.com/mwiki/index.php?title=c/language/attributes/deprecated&amp;oldid=124545</a>"                    </div>
                    <!-- /printfooter -->
                                                            <!-- catlinks -->
                    <!-- /catlinks -->
                                                            <div class="visualClear"></div>
                    <!-- debughtml -->
                                        <!-- /debughtml -->
                </div>
                <!-- /bodyContent -->
            </div>
        </div>
        <!-- /content -->
        <!-- footer -->
        <div id="cpp-footer-base" class="noprint">
            <div id="footer">
                        <div id="cpp-navigation">
            <h5>Navigation</h5>
            <ul><li><a href="https://en.cppreference.com/w/c/language/attributes/deprecated">Online version</a></li><li>Offline version retrieved 2022-07-30 14:05.</li></ul></div>
                        <ul id="footer-info">
                                    <li id="footer-info-lastmod"> This page was last modified on 27 November 2020, at 12:20.</li>
                                    <li id="footer-info-viewcount">This page has been accessed 4,889 times.</li>
                            </ul>
                    </div>
        </div>
        <!-- /footer -->
        <script>if(window.mw){
mw.loader.state({"site":"loading","user":"missing","user.groups":"ready"});
}</script>
<script src="../../../../common/skin_scripts.js"></script>
<script>if(window.mw){
mw.loader.load(["mediawiki.action.view.postEdit","mediawiki.user","mediawiki.page.ready","mediawiki.searchSuggest","mediawiki.hidpi","ext.gadget.ColiruCompiler","ext.gadget.MathJax"], null, true);
}</script>
<script src="../../../../common/site_scripts.js"></script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-2828341-1']);
_gaq.push(['_setDomainName', 'cppreference.com']);
_gaq.push(['_trackPageview']);
</script><!-- Served in 0.341 secs. -->
	</body>
<!-- Cached 20220618073554 -->
</html>